reosarevok: it makes semantically no difference to me whether it is a separate official homepage or a subpage of main artist/label/place official website, it is still official, maybe the current relationship type description should be extended to allow this.

reosarevok: There are many times where I would have liked to link some page to an entity but there wasn’t really a good relationship to use for it. E.g., a Release/Release Group to a (sub)page an an artist’s or label’s website. Or some artists will have a page for each of the constellations they play in, but the constellations themselves do not have their own official websites.

you can add the old name as an alias (can and should) as "legal name" and use dates (from birth to marriage day) and a second alias with the new name (also as "legal") which has a start date on the marriage day

now, for anything that was released prior to the name change, that should have artist credits with the old name. that is done on the release an recordings so if those aren't added yet no need to worry about that yet